GeForce 830M vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which makes use of a 55 nm design. AMD has set the core speed at 725 MHz. The DDR2 RAM runs at a speed of 800 MHz on this specific model. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 53 Watts (212%)

Memory Bandwidth

As far as performance goes, the Radeon HD 3650 256MB should theoretically be a lot better than the GeForce 830M in general. (explain)

Radeon HD 3650 256MB		25600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 11200 (78%)

Texel Rate

The GeForce 830M should be much (approximately 184%) more effective at anisotropic filtering than the Radeon HD 3650 256MB. (explain)

GeForce 830M		16464 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 10664 (184%)

Pixel Rate

The GeForce 830M should be a lot (more or less 184%) more effective at full screen anti-aliasing than the Radeon HD 3650 256MB, and will be capable of handling higher resolutions more effectively. (explain)

GeForce 830M		8232 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 5332 (184%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.